2024 EJC J2 H1 PRELIM QP P2

©EJC 2024 8867/J2H1PRELIM/2024 [Turn over EUNOIA JUNIOR COLLEGE JC2 PRELIMINARY EXAMINATIONS 2024 General Certificate of Education Advanced Level Higher 1 CANDIDATE NAME CIVICS GROUP 2 3 - REGISTRATION NUMBER PHYSICS Structured Questions 8867/02 September 2024 2 hours READ THESE INSTRUCTIONS FIRST Write your name, civics group and registration number on all the work you hand in. The use of an approved scientific calculator is expected where appropriate. Section A Answer all questions. Section B Answer any one question. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use paper clips, highlighters, glue or correction fluid. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 24 printed pages. For Examiner’s Use Section A Q1 8 Q2 11 Q3 10 Q4 9 Q5 8 Q6 14 Section B Q7 20 Q8 20 s.f. P2 Total 80

2 ©EJC 2024 8867/J2H1PRELIM/2024 Data Formulae uniformly accelerated motion             2 2 2 1 2 1 2 1 2 2 1 1 1 s at u as R / R / R u v / R t R R resistors in series resistors in parallel speed of light in free space                         8 1 19 27 31 e 27 p 23 1 A 11 2 2 2 3 00 1 60 9 11 1 10 m s 10 C 1 66 10 kg 10 kg 10 kg 6 02 10 mol 10 N m k 6 1 g m 7 s 7 6 6 9 8 c u . e . . . N G . g . m m . . elementary charge unified atomic mass constant rest mass of electron rest mass of proton the Avogadro constant gravitational constant acceleration of free fall

3 ©EJC 2024 8867/J2H1PRELIM/2024 [Turn over 1 (a) Define acceleration. …………………………………………………………………………………………………....... …………………………………………………………………………………………………...[ 1] (b) An object is released from rest in a viscous fluid. Fig. 1.1 shows the variation with time t of the acceleration a of the object as it falls in the fluid. (i) Explain why the acceleration of the object decreases with time. …………………………………………………………………………………………....... …………………………………………………………………………………………....... ………………………………………………………………………………………….. [2] (ii) Explain why the initial value of the acceleration is 9.8 m s2. …………………………………………………………………………………………....... ………………………………………………………………………………………….. [1] 0 2 4 6 8 10 0 2 4 6 8 Fig. 1.1 a / m s–2 t / s

4 ©EJC 2024 8867/J2H1PRELIM/2024 (iii) Use Fig. 1.1 to estimate the speed of the object when its acceleration is zero. Explain your working clearly. speed = ……………………… m s–1 [2] (iv) In Fig. 1.2, sketch the variation of the displacement s of the object with time t, from t = 0 s to t = 8 s. There is no need to label the displacement axis. [2] [Total: 8] s / m t /